{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "Proximal tubular damage caused by HCBD and papillary damage caused by BEA were distinguished both by conventional urinalysis ( volume and specific gravity ) and by measurement of the two urinary enzymes ."}
{"Disease": [], "Chemical": ["HCBD", "BEA"]}